The main features of 2.2.15aa1 are:
o Support for 4Gigabyte of RAM on IA32 (me and Gerhard Wichert)
o Support for 2T of RAM on alpha
o Improved VM for high end machines with enough ram and doing
heavy I/O under high memory pressure. (me)
o RAW-IO (also on bigmem). (Stephen C. Tweedie)
o SMP scheduler improvements. (me and partly from 2.3.x)
o LFS (>2G file on 32bit architectures)
o assorted fixes
Detailed description of 2.2.15aa1:
---------------------------------------------------------------------------
IO-wait2.gz -> avoid unplugging the request queue
when not necesary
SMP-scheduler-2.2.14-G.gz -> new reschedule_idle. (me and
partly backported from 2.3.x,
2.3.x version was contributed by
Ingo Molnar)
alpha-IPI-1.gz -> avoids scheduling while waiting
somebody else to finish send
an IPI
alpha-init-mm-1.gz -> export init_mm symbol on alpha (for
bttv) (reported by somebody so I added
it)
alpha_initrd_fixes.gz -> make initrd robust against
huge boot kernel allocations (me)
bigmem-2.2.15-9.gz -> bigmem production code (IA32 and
alpha). (me and Gerhard Wichert)
bigmem-large-shm-1.gz -> change shmget to get an unsigned
paramemter in the attempt to
allow >2giga shm allocations on IA32.
bss-IO-1.gz -> avoids binary image space waste in
block device arrays. (me)
buf-run_task_queue.gz -> drop a suprious run_task_queue in
sync_old_buffers. (me)
delack-timer-5.gz -> additional paranoid stuff in TCP
delayed acks code (if somebody
can still reproduce lockups
under heavy TCP load, the
delack-timer-5 patch can be
the solution). In 2.2.15
only what it was obviously wrong
is been fixed, but at the time I
did delack-timer-5 I was convinced
the stuff in 2.2.15 _might_ not be
enough, so if you have still lockups
under 2.2.15 let us know.
delack-timer-5 is reported to
definitely fix the TCP lockup. (me)
elevator-starvation-11.gz -> rewrite of the elevator adding
I/O scheduler to avoid I/O starvation.
ioctl support is provided with latest
interface needed by sparc64/mips64 and
that is not yet been merged in 2.3.x. (me)
fchown-oops-2.2.14 -> fix for VFS bug with quota. (Andi Kleen)
inode-cleanup-3.gz -> minor inode stuff cleanup. (me)
java-proc.gz -> revertd the semantic change that
make difference between
/proc/00000$$ and /proc/$$, this
allows backwards compatibilty of
a misfeature and it _won't_ hurt
security. There's no downside
in reverting the 2.2.13 semantic
change.
kupdate-sigstop-2.2.11-1.gz -> allows kupdate to be stopped via
SIGSTOP (currently it must be stopped
by setting interval to zero via
sysctl). This returns useful in the
airplane where you do killall -STOP
kupdate ;) (me)
lp-careful-1 -> make lp to really careful when -C on is
used. Avoids to eat jobs from the
spool while the printer is off. (me)
mremap-waste-virtual-stack-space-1.gz -> avoid mremap to grow in virtual
addresses.
nanosleep-4.gz -> provide nanosleep usec resolution
so that a signal flood doesn't
hang glibc folks that correctly
trust the rem field to resume
the nanosleep after a syscall
interruption. (without the patch
nanosleep resolution is 10msec). (me)
no-swapout-2.2.10-B.gz -> avoid swapin/swapouts during heavy
I/O (strictly necessary for decent
performances on very I/O and MM loaded
servers). (me)
overcommit-1.gz -> make sure to not understimate the
available memory (the cache and buffers
may be under the min percent). (me)
probe-irq-2.3.14-pre2-1.gz -> avoid a pending irq to be mistaken
for a spurious irq. (me)
protected-balance-2.gz -> avoid OOM of tasks when memory is
allocated in a ramdisk. All protected
buffers are accounted correctly
as non freeable now. (me)
refill_freelist-deadlock-1.gz -> avoid deadlocking in getblk while in
OOM due a page fault happened while
task state was non-running. (bug
spotted by Ingo Molnar in 2.3.x,
2.2.x trivial solution from me)
rs6000-4.gz -> allow rs6000 to boot even if there's
more than 0.7g of RAM in the system.
(me)
serial-proc-3 -> fix serial (and non-serial) proc mm
corruption and spoofing (spotted and
original fix by me, lots of replicated
bugs of the same type noticed and fixed
by Manfred Spraul)
set_blocksize-1.gz -> some set_blocksize change to invalidate
leaking entry. (me)
set_rtc_mss-SMP-race-1.gz -> fix set_rtc_mss SMP race between
timer irq and rtc irq. (me)
shrink_all_cache-2.2.10-A.gz -> make sure that big memory boxes will
shrink the cache well enough. (me)
silent-stack-overflow-3.gz -> avoid stack to silenty overflow
on the heap (make life easier
to traq down userspace issues).
Perfect approch is not possible
even using special LDT for the stack
segment. The approch in the patch
will work 99% of the time and it
enforces a GAP between heap and stack.
(me)
slow-gtod-SMP-race-1.gz -> fix SMP race in slow gettimeofday. (me)
stod-lost_ticks-1.gz -> check lost_ticks in settimeofday to
be more precise.
swap-lockmap-1.gz -> fix SMP race in swap lockmap wait
for I/O completation (shm still depends
on the swap lockmap in 2.2.x). (me)
timer_bh-deadlock-3.gz -> avoids timer code to deadlock if a
timer reinsert itself with timeout <=
1. (me)
tq_scheduler-cli-1.gz -> avoids tq_scheduler to run with irq
disabled (for better irq latency and
possibly also for the IPI timeout
issue). (spotted by Manfred,
reminded by Andi, current patch from me)
tsc-calibration-non-compile-time-1.gz -> tsc calibration must be
dynamic and not a compile
time thing because gettimeofday
is dynamic and depends on the tscs
to be in sync. (me)
version.gz -> set extraversion to aa1
z-bigmem-rawio-2.2.14aa1.gz -> SCT's rawio bigmem capable. (Stephen C.
Tweedie)
z-bigmem-rawio-lvm-2.2.15pre13aa1-6.gz -> LVM compatible with the 2.3.x one
(Heinz Mauelshagen)
z-rtclight-2.2.15pre13aa1-1.gz -> needed by alpha SMP (won't be needed
anymore in 2.4.x)
zz-buf-flushing-4.gz -> buffer flushing heuristic backported
from 2.3.x (me)
zzz-lfs-2.2.15aa1-7.gz -> LFS with new fcntl64 as asked by the
glibc guys. (glibc LFS support can be
based on this patch, 2.3.x still misses
the fcntl64 syscall but check my ftp area
and search for lfs-lock-6 to add it to
2.3.x)
---------------------------------------------------------------------------
The 2.2.15aa1 patch is here:
ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.15aa1.gz
As usual all the separate patches are in:
ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.15aa1/
and they can be applyed in order to generate the 2.2.15aa1 kernel.
Andrea
PS. If you'll run with more than 4giga of RAM on alpha, you'll need also
to fix procps if you want to read the correct MM values with `free`, `top`
and `vmstat`. procps takes all the memory information with byte
granularity in `int` words (and not long words). I fixed procps this way:
ftp://ftp.suse.com/pub/people/andrea/procps/procps-2.0.2-bigmem-1.gz
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This archive was generated by hypermail 2b29 : Fri May 05 2000 - 12:18:09 EDT